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-   -   Electrical Short. (http://zr1.net/forum/showthread.php?t=17951)

cvette98pacecar 07-21-2012 06:03 PM

Electrical Short.
 
Is there any other fuse panel other than the panel on the right side of the dash?

I am almost positive the 93 has a short. I disconnected the negative terminal off the battery and connected a meter between the Negative wire and the negative on the battery there is 12vdc present on the meter. I pulled every fuse in the fuse panel and I still have 12vdc on the meter.
I checked to see if there was any aftermarket wiring that I could see and I didnt see any.

Any Ideas?

scottfab 07-21-2012 06:43 PM

Re: Electrical Short.
 
Quote:

Originally Posted by cvette98pacecar (Post 145857)
Is there any other fuse panel other than the panel on the right side of the dash?

I am almost positive the 93 has a short. I disconnected the negative terminal off the battery and connected a meter between the Negative wire and the negative on the battery there is 12vdc present on the meter. I pulled every fuse in the fuse panel and I still have 12vdc on the meter.
I checked to see if there was any aftermarket wiring that I could see and I didnt see any.

Any Ideas?

I would expect 12v doing what you're doing even with no short.

cvette98pacecar 07-21-2012 07:05 PM

Re: Electrical Short.
 
Quote:

Originally Posted by scottfab (Post 145860)
I would expect 12v doing what you're doing even with no short.

Where would the live circuit be? The ignition is off and all of the fuses are pulled. There should be no circuit unless there is a short.

vilant 07-21-2012 07:57 PM

Re: Electrical Short.
 
I know on the 1990 " there is a fuse holder located behind the instrument panel, below and to the right of the glove compartment. To access the the fuse holder, you must remove the cover under the instrument panel on the passenger's side." That's straight from the owner's manual with a pic and an arrow pointing under the glove box. Hope that helps.

Demps 07-21-2012 08:12 PM

Re: Electrical Short.
 
Check amperage for a current draw, vs voltage. That will show if there's a parasitic draw. There should be a small bit for powered items with key off.
Ted

VetteMed 07-21-2012 09:01 PM

Re: Electrical Short.
 
Quote:

Originally Posted by vilant (Post 145867)
I know on the 1990 " there is a fuse holder located behind the instrument panel, below and to the right of the glove compartment. To access the the fuse holder, you must remove the cover under the instrument panel on the passenger's side." That's straight from the owner's manual with a pic and an arrow pointing under the glove box. Hope that helps.

Yep, there's actually 2 fuse holders with 4 fuses in each, if I recall correctly.

scottfab 07-21-2012 09:02 PM

Re: Electrical Short.
 
Putting the reason why you'd see 12v on the neg side of the pulled battery wire, why do you think there is a short?
What is the original symptom?
Battery runs down ?

cvette98pacecar 07-21-2012 10:28 PM

Re: Electrical Short.
 
Quote:

Originally Posted by scottfab (Post 145872)
Putting the reason why you'd see 12v on the neg side of the pulled battery wire, why do you think there is a short?
What is the original symptom?
Battery runs down ?

Battery is on a tender always and it is dead, The tender can keep up with the drain.

cvette98pacecar 07-21-2012 10:30 PM

Re: Electrical Short.
 
Quote:

Originally Posted by Demps (Post 145868)
Check amperage for a current draw, vs voltage. That will show if there's a parasitic draw. There should be a small bit for powered items with key off.
Ted

That was the next step after checking for a closed circuit, when the circuit should be open.

Hib Halverson 07-22-2012 01:07 AM

Re: Electrical Short.
 
If you connect a volt meter between the batter and ground it will read whatever the battery voltage is.

If you connect an amp meter between the battery and ground you'll read current flow. There should be only a few hundred milamps.

From reading the other posts, I think you understand the procedure of using either a test light or an ammeter then pull fuses.

You might also have a battery which is, itself, shorted.


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